I saw it happen once, sometime over the last week. Doing what you asked, I get directed here everytime in Chrome, IE, and FF. Hopper Zone does not come up when I do the search you asked in Yahoo or Bing. It does if I actually put in Hopper Zone.
Firefox & IE both took me to MyFilestore.... both times with some pop-up about updating my mediaplayer. The whole thing looks like some kind of spam! Glad it works OK from my local bookmarks.